package com.mypage.utils;
import android.content.Context;
import android.util.TypedValue;

public class DanweiUtils {

	
	/**
	 * 常用单位转换的辅助类
	 * 
	 * @author xuchen 
	 * @time   Administrator 11:21
	 */
	    public DanweiUtils() {
	        /* cannot be instantiated */
	        throw new UnsupportedOperationException("cannot be instantiated");
	    }

	    /**
	     * dp转px
	     *
	     */
	    public static int dp2px(Context context, float dpVal) {
	        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
	                dpVal, context.getResources().getDisplayMetrics());
	    }

	    /**
	     * sp转px
	     *
	     */
	    public static int sp2px(Context context, float spVal) {
	        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
	                spVal, context.getResources().getDisplayMetrics());
	    }

	    /**
	     * px转dp
	     *
	     */
	    public static float px2dp(Context context, float pxVal) {
	        final float scale = context.getResources().getDisplayMetrics().density;
	        return (pxVal / scale);
	    }

	    /**
	     * px转sp
	     *
	     */
	    public static float px2sp(Context context, float pxVal) {
	        return (pxVal / context.getResources().getDisplayMetrics().scaledDensity);
	    }
	}
